During a race a runner runs at a speed of 6m/s. 2 seconds later she is running at a speed of 10 m/s what is the runner accelerate?

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.